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Diffstat (limited to 'testsuite/tests/codeGen/should_compile/cg001.hs')
| -rw-r--r-- | testsuite/tests/codeGen/should_compile/cg001.hs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/testsuite/tests/codeGen/should_compile/cg001.hs b/testsuite/tests/codeGen/should_compile/cg001.hs new file mode 100644 index 0000000000..ad00a8f89c --- /dev/null +++ b/testsuite/tests/codeGen/should_compile/cg001.hs @@ -0,0 +1,15 @@ +{-# LANGUAGE MagicHash #-} + +module ShouldCompile where + +import GHC.Exts + +data STRef s a = STRef (MutVar# s a) + +-- ghc 4.08 had a problem with returning a MutVar#. + +from :: STRef s a -> MutVar# s a +from (STRef x) = x + +to :: MutVar# s a -> STRef s a +to x = STRef x |